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MHT CET202620 April 2026Evening ShiftChemistryp Block Elements (Group 15, 16, 17 & 18)Actual

In Haber process of production of ammonia Al ₂ O ₃ is used as

Options

  1. AAdsorbate
  2. BInhibitor
  3. CCatalyst
  4. DPromoter

Correct answer

D. Promoter

Step-by-step solution

In the Haber process for the synthesis of ammonia, finely divided iron is used as the catalyst. To enhance the activity of the iron catalyst, small amounts of aluminum oxide ( Al ₂ O ₃ ) and potassium oxide ( K ₂ O ) are added. Substances that increase the efficiency or activity of a catalyst are known as promoters. Therefore, Al ₂ O ₃ acts as a promoter. Answer: Promoter

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